mļsCW(xu)УˮƽI(y)(j)M(jn)һƄ(dng)W(xu)Уȫٰl(f)չҪQȫ挍(sh)ʩW(xu)˹
һȿ˽MC
1W(xu)УȿίT(hu )ؓ؟W(xu)Уȿ˵ĽMI(lng)Ϳƶȵӆ˽YČW(xu)УȿίT(hu )M£
Σ
Σ
2W(xu)УȿίT(hu )Oȿk
kΣ
kҳɆT꼉
ȿ˵Ŀ˺Ҫ΄(w)
(һ)Ŀ
ȿ˻ԭָYόW(xu)Уl(f)չ(sh)Hͨ^(gu)ȫ挍(sh)ʩȿ(yu)Ŀwϵƿ˽M(chung )¿˷ȫ˵ļCڌW(xu)УγԿ(j)ЧԿ(j)Чur(ji)wĿ˹˞ֶεăr(ji)ֵ
()Ҫ΄(w)
YόW(xu)У(sh)Hȿ˵Ҫ΄(w)һnj(sh)ʩW(xu)УȫУT(mn)ȿ{(dng)T(mn)ؓ؟˵ķeO(dng)Ժ̈́(chung )_W(xu)Уİl(f)չnj(sh)ʩT(mn)Ȳȿ(j)Чˮƽnj(sh)ʩȲTȿTM(jn)(sh)FTcW(xu)УĺCl(f)չ
W(xu)УĘI(y)(j)ָwϵwĿ˞M(jn)ƌW(xu)ԺͿԵԭtƌW(xu)W(xu)Уl(f)չh(hun)ӰͻW(xu)УĘI(y)(w)ͨ^(gu)ӆwӋȫOøT(mn)(j)ЧĿƌW(xu)όW(xu)Уl(f)չT(mn)(sh)HĿ(j)ЧĿwϵ؟μsC_ʡ˾_Ĺ΄(w)͌W(xu)УĿ˵
ߌW(xu)Уw(j)Чȿ˽M_̌W(xu)(Ӗ)(zhun)I(y)W(xu)(jng)I(yng)(w)͙CP(gun)ڹĂ(g)(li)T(mn)Ŀָwϵ
ҪE
һƽMY혹P(gun)ϵ_؟ƌW(xu)\DCƅf(xi){OòҎC؟ҪƌW(xu)ضTT(mn)ҪT˜ڽMCǰöT؟mW(xu)Уȿ˵Ąڄ(dng)MW(xu)Уȿ˵ĸЧM(jn)춨MC
ҪڬFИI(y)(j)˹ĻAȿԭоԽP(gun)I(j)Чָ˺P(gun)I(j)ЧОĵȿ˷wϵҪYό(sh)Hƥ˵ԭtԶԹoƌW(xu)ό(sh)Hڲȿ˷ʽͬ|(zh)IJT(mn)]OӋָرᘌԵȿ˷
ȿ˵ҪҪ@Ј(chng)kW(xu)ȫӖOYa(chn)(jng)I(yng)(yu)|(zh)(w)hL(fng)鷀ȷP(gun)Iָur(ji)ʽ(sh)HJy㿃(j)Чur(ji)ָָur(ji)ĺcʴ_ur(ji)ur(ji)ƌW(xu)ur(ji)Y挍(sh)
(li)T(mn)Ҫ(j)ЧĿYό(sh)HYa(chn)(jng)I(yng)ȫ(yu)|(zh)(w)鷀ȷȿָԹܞdwӌӷֽ䌍(sh)(j)ЧָϱT(mn)(sh)Hȿָwϵʹȿָ䌍(sh)oÿλTӌӂfȿ˄(dng)_ɌW(xu)У_ȿĿ
ȿcĻA\ȿ˵ĿƌW(xu)ur(ji)ƱT(mn)ȿkƌW(xu)طӳT(mn)ͱT(mn)ĘI(y)(j)ȫM(jn)W(xu)Уȿur(ji)
T(mn)ؓ؟ȿ˃T(mn)ؓ؟ȿ˃Ҫ@˼|(zh)I(lng)L(fng)(j)ЧɞP(gun)I(j)Чָȿָwϵͬr(sh)ҪwFT乤ĝM(mn)ʺ(sh)(j)
Tȿ˃Tȿ˃ݷֹI(y)(j)B(ti)ͬr(sh)Ҫ(li)TȿָwFTĹI(y)(j)(g)cMĺCl(f)չ
T(mn)ؓ؟˵ȿ˷ʽT(mn)ؓ؟˵ȿ˞ȿ˺¶ȿ
ȫȿ˽Yƶur(ji)YcλxˆTλ׃(dng)нӖ_(ki)l(f)u(yu)uȺ͆TI(y)l(f)չoܒ^ȫ(li)˲ŵĕxxΙC(yu)TӖC_(ki)չTI(y)l(f)չͨOӋ
ͨCͨCǿ(j)ЧɔP(gun)Iˌ(j)Чur(ji)Юhr(sh)СMɆTT(mn)ؓ؟ҪcM(jn)ІΪՄͨ_JͨĿڿ϶ɿ(j)ָ(wn)}ͬcY֮gڲԭŬķ
VC(jng)^(gu)(j)Чͨˌ猦˽YЮhVһI(lng)(jng)ͺٲýKҊ(jin)ͨ^(gu)ͨV_Ŀ˽YԹʾ˵
W(xu)˹AM(mn)˹յõЧ